MQL5 リファレンス標準ライブラリ科学的チャートCCurveXMin TypeNameColorXMaxXMinYMaxYMinSizePointsSizePointsFillPointsColorGetXGetYLinesStyleLinesIsSmoothLinesSmoothTensionLinesSmoothStepLinesEndStyleLinesWidthHistogramWidthCustomPlotCBDataCustomPlotFunctionPointsTypeStepsDimensionTrendLineCoefficientsTrendLineColorTrendLineVisibleUpdateVisible XMin X 함수의 최소값을 반환 (실수만 해당). double XMin() 값 반환 모든 함수인수 중 최소의 실수. XMax YMax